Case C‑118/20

(Reference for a preliminary ruling– Citizenship of the Union– Articles20 and 21 TFEU– Scope– Renunciation of the nationality of one Member State in order to obtain the nationality of another Member State in accordance with the assurance given by the latter to naturalise the person concerned– Revocation of that assurance on grounds of public policy or public security– Principle of proportionality– Statelessness)

1.Citizenship of the Union– Provisions of the Treaty– Nationality of a Member State– Division of powers between the Union and the Member States– Limits– Conditions for acquisition and loss of nationality– Within the powers of the Member States

(see paragraph37)

2.Citizenship of the Union– Provisions of the Treaty– Scope ratione personae– Citizen of the Union who renounced the nationality of her Member State of origin in order to comply with the requirements of the naturalisation procedure initiated in another Member State, in accordance with the latter’s assurance as to the grant of that nationality– Citizen who exercised her freedom of movement and residence in that other Member State and faces a decision refusing to grant the nationality of that other State– Citizen who became stateless during the naturalisation procedure– Included

(Arts20 and 21(1) TFEU)

(see paragraphs39-44, operative part1)

3.Citizenship of the Union– Provisions of the Treaty– Nationality of a Member State– Loss of the nationality of a Member State in view of naturalisation by another Member State– Revocation by the authorities of that other Member State of the assurance as to the grant of the nationality of that State once the bond of nationality with the State of origin has been dissolved on account of serious administrative offences– Loss of citizenship of the Union– Whether permissible– Condition– Existence of legitimate grounds and observance of the principle of proportionality

(Art.20 TFEU)

(see paragraphs51-54, 56-66, 68-74, operative part2)